Alright, let's work through 9986 times 8037 step by step
9986 × 8037 = 8037 × (9986)
+ 8037 × 6 that results in 48222
+ 8037 × 80 what gives us 642960
+ 8037 × 900 yielding 7233300
+ 8037 × 9000 resulting in 72333000

= 80257482
